Wooden ship construction



J. T. L. LAVAGETTO.

WOODEN SHIP CONSTRUCTION- APPLICATION FILED JAN. 8, 1919.

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J. T. L. LAVAGETTO. WOODEN SHIP CONSTRUCTION. APPLICATION FILED JAN. 8. 1919.

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" NI D *s TEfi PATENT O E- I team m. Lavaem'ro, or PORTLAND, cannon.

woonnn snir CONSTRUCTION.

To all whom it may concern:

Be it known that I, Josnrn T. L; LAVA- Gn'r'ro, a citizen of the United States and a resldent of Portland, county of Multnomah, State of Oregon, have inventeda certain new and useful Improvement in Wooden bhip Construction, of which the following is a specification. My invention relates to wooden ship construction, and the objects of my invention are the following! f To make the ship more permanently water-tight. To make the ship of greater strength by reinforcing the hull in parts on the exterior with bars and sheeting of steel, thereby stiffening the vessel and protecting the hull from in ury by impact and undue wear. To this end I so arrange the seams of the planking and the lower part of the ship that the o posing forces created by the weight of t e latter and the counter pressure of the sea will have a tendency to compress the seams and keep them closed. And I so arrange the plankin of the upper part of the hull as to resist t e penetration of the waves dashed up by the sea and shed the water thereof from the upper part of the shi s sides.

nother object of my invention is to provide a Wooden ship construction which shall be economical in the use of lumber for buildin the ships sides.

I attain these and other incidental features hereinafter described by the construction illustrated in the accompanying drawin ,inwhich;

igure 1 represents a side elevation of a vessel embodylng all the features ofmy invention;

Fig. 2 is a larger-scale elevation of the bow of the vessel, illustrating the application of the diagonal steel bars for reinforcing the hull;

Fig. 3 is a partial transverse section representing the arran ement of the planking in the lower and t e upper parts of the hulls;

F i 4 is a sectional detail of the stem of the s ip; and

Fig. 5 is a detail in cross section similar to Fi 3, but in this instance illustrating the si es of the ship construction of the inner and outer courses or lanks.

The frame of the 5 ip, represented by a, may be of any convenient construction. On

, Specification of Letters Patent. Patented Sept. 13, 1921. 'lpplicatibn men January 3, 1910. serial No. 270,208.

the upright frame members or ribs are bolted the planks lIlClOSiIlg the sides of the ship. These planks I arrange preferably as shown in Figs. 3 and 5. I

Having reference to Fig. 3, the planks, b,

of the lower part of the hull are of rhomboid cross section so as to have oblique overlaping faces forming the seams in the sides.

hese seams are arranged as shown, in order that the weight of the ship and the counter pressure of the sea shall create opposingforces having atendency to compress the seams and keep them closed. The described construction may extend for two-thirds of the height of the hull from the bottom up. The diagonal seams so created also are adapted to hold the oakum more securely in place.

In the upper part of the vessel I use planks arranged as at 0, also of rhomboid cross section, but with the seams pointing downward; the purpose of which is to better adapt the upper part of the sides of the ship to resist the penetration of the waves dashed up against it by the sea and to more effectively shed the water.

In Fig. 5 I have shown a modification with regard to the construction and arrangement of the planking covering the sides of the ship. In this case the planking comprises inner and outer courses. The inner course (l may be of the usual construction, but the outer course should be made of planks arranged as described with res ect to the parts I) and c of Fig. 3. By buil ing the sides of the vessel of inner and outer courses, as described, not only is the hull strengthened, but, as I believe, the factor of making the hull water-tight is increased.

Furthermore, in constructing ships sides in the manner illustrated in Fig. 5, I deem it preferable that the opposed faces of the inner and outer courses be left rough, as it has a tendency to give them a better contact. The inner course 03 may be thoroughly oiled and a coating of tar interposed be tween the opposed faces of the inner and outer courses.

The end seams of the planking at the exterior of the ship are to be well calked and covered with diagonal steel bars f, preferably arranged as shown in Figs. 1 and 2, and sunk into the sides of the vessel, so that their outer face will be flush with the outer face of the plank. By this construction a smooth exterior is provided for the ships sides, and the headway of the vessel is not in any wise impeded.

As will be noted from Fig. 2, by the use the. ship and protect its sides from injury due to impact with Wharves or other vessels. The steel bars may have a Width of 12" to 18" and a thickness of *3 of an inch, but these are merely suggestions. o

In :order to further strengthen the vessel, I preferto inclose the exterior of the sides at, the ends,.bottom and top, as shown in Fig, l, the sheeting being made of steel plates g. And I deem it preferable that the steel plate at the top and sides be arranged so as to overlap the rail, as shown at h in Fig. 3. And at the bow of the vessel the steel plates overlap the stem 2', as shown at 7', the overlapping plate portions being covered by the shoe Z, secured by a bolt m. See Fig. 4. The sheeting g is to cover the ends of the bars 7, as at n.

All surfaces of the planks covered by the bars or the plates should be well coated with oil or tar before covering with the bars or lates.

etails not described do not have a direct bearing on my invention and may be arranged according to the judgment of the builder.

I claim:

In a wooden-ship hull, the combination of a frame, a covering of planks, and metal bars extending diagonally across the outer faces of the sides of the planks, to cover the end seams of the lanking.

J OS. T. L. LAVAGETTO. 

